Spray Advisor. Jackie Strager Natural Resource Analysis Center West Virginia University Morgantown, WV

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1 USDA Forest Service In cooperation with: West Virginia University Jackie Strager Natural Resource Analysis Center West Virginia University Morgantown, WV Photo: John Ghent, USDA Forest Service

2 What is the? Set of decision support tools for aerial spraying Incorporated within a GIS framework Ongoing technical project coordinated by the USDA Forest Service

3 Project Objectives Coordinate technology development for aerial spraying and related decision support Develop spatially-based tools to aid spray program managers Make use of widely available GIS software Photo: John Ghent, USFS

4 Using Uses of : Planning spray programs Training tool Assessment of spray results Mitigation of spray drift Requirements: GIS software (ArcGIS 9.x) GIS datasets Spray block boundaries (pre-spray) or Spray lines (post-spray) Photo: USDA APHIS

5 Tools Extension Toolbar in ArcGIS version 9 Current capabilities: General settings and options Spray deposit and drift modeling using AGDISP model Several tools for analysis and query of modeled deposition and drift Logging of model settings

6 AGDISP Model Input Inputs Spray block boundary or Spray lines (from GPS)

7 AGDISP Model Model to simulate and predict spray deposit and drift Dependent on: Spray droplet sizes Release height Turbulence behind aircraft Meteorological conditions Near-wake model, validated Images: USDA Forest Service Continuum Dynamics, Inc.

8 AGDISP Model and AGDISP: Utilizes full AGDISP computational engine Aircraft Meteorology Application details Spray material

9 AGDISP Model Output Output Downwind drift (deposition) as new layer in map

10 Using Integration within ArcGIS allows drift model output to be used in many ways: Visualization of results on map Spatial overlay with other GIS datasets Comparison of different model runs Statistical summarization and analysis Use other capabilities of ArcGIS

11 Tools Tools to assess results: Query deposition at point Query deposition for area Deposition profile graph Deposition contours Query threshold values Area above threshold (1.0)

12 Demonstrations 1. Sample results from AGDISP runs under multiple scenarios 2. Live demo available during interactive sessions 11:15-12:00

13 Input Dataset: Polygon Study site: Block #56, Hampshire County, WV acres in size 550 m 670 m WIND FLIGHT 1500 m (1 mile)

14 Input variables in AGDISP Spray Scenario: Dimilin 4L at 0.5 oz/ai/ac at 0.5 gal/acre (180 µm droplets) Active Fraction (% ai in the tank mix) = Nonvolatile fraction (amount of total spray that does not evaporate) = 0.1 Settings: Canopy height: 70 ft Release height: 130 ft Aircraft: Air Tractor 502 Swath Width: 150 ft Nozzles: n=6, 95% spacing Varied wind speeds, air temp, and relative humidity

15 Demonstration Runs Spray Material: Dimilin Run # Rate Wind speed Temp Relative Humidity Situation gal/acre 5 mph 55 F 70% Best gal/acre 10 mph 55 F 70% gal/acre 5 mph 75 F 40% gal/acre 10 mph 75 F 40% Not ideal

16 Run 1 Max Deposition = Run 2 Max Deposition Wind: 5 mph Temp: 55 o F RH: 70% Wind: 5 mph Temp: 55 F RH: 70% Wind: 10 mph Temp: 55 o F RH: 70% Wind: 10 mph Temp: 55 F RH: 70% Run 3 Max Deposition = Run 4 Max Deposition = Wind: 5 mph Temp: 75 o F RH: 40% Wind: 5 mph Temp: 75 F RH: 40% Wind: 10 mph Temp: 75 o F RH: 40% Wind: 10 mph Temp: 75 F RH: 40%

17 Current Work Work with AGDISP results Display results indicate areas of zero deposition New custom contour creation tool Support for importing data from aircraft GPS: Formats converted: AG-NAV Satloc Trimble Converts flight data into shapefile format

18 Future Plans Incorporate more complex spray scenarios Multiple AGDISP inputs (e.g. varied meteorology) More complex terrain, far-wake modeling Additional spray-related models and tools BIOSIM insect phenology/efficacy Computer Aided Spray Productivity and Efficiency Routine (CASPER) Genetic Algorithm (SAGA) Dose-response modeling tools (Spray Safe Manager)

19 Acknowledgments is a cooperative effort directed by the USDA Forest Service Major collaborators: West Virginia University Interface development, ArcGIS extension development Scion (Forest Research, New Zealand) Programming support and design for dose-response and environmental modeling (Spray Safe Manager) Continuum Dynamics, Inc. AGDISP near-wake spray drift model Canadian Forest Service BIOSIM insect phenology and efficacy modeling University of Georgia Artificial Intelligence Center Genetic Algorithm (SAGA) Optimization of CASPER

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